<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            overflow: hidden;
            background-color: #39393b;
        }

        input {
            position: absolute;
            top: 50px;
            left: 50px;
            width: 300px;
            height: 50px;
            font-size: 20px;
        }
    </style>
</head>

<body>
    <input type="text" id="input">
    <canvas id="canvas"></canvas>
    <script src="index.js"></script>
</body>

</html>